机票改签 英语怎么说

机票改签在英文中被称为 "flight rebooking" 或 "flight rescheduling". 来源是组合两个单词 "flight" 和 "rebooking" 或 "rescheduling", 分别表示 "航班" 和 "重新预订" 或 "重新安排". 例如:

I need to make a flight rebooking because I can't take the original flight. (我需要机票改签, 因为我不能乘坐原定航班)
Can I change my flight to a later time? I need to reschedule it. (我能把航班改到晚一点吗? 我需要机票改签)